Profiler and Scoreboard are Apache related montoring tools listing processes and time required to complete them.
Apache::Profiler is a mod_perl init (and cleanup) handler to profile time taken to process one request. Profiled data is reported to the Apache Log file. It'd be useful to profile some heavy application taking a long time to proceed.
Apache keeps track of server activity in a structure known as the <code>scoreboard</code>. There is a slot in the scoreboard for each child server and its workers (be it threads or processes), containing information such as status, access count, bytes served and cpu time, and much more. This same information is used by <code>mod_status</code> to provide current server statistics in a human readable form. <code>Apache::Scoreboard</code> provides the Perl API to access the scoreboard. <code>Apache::VMonitor</code> is an extended equivalent of <code>mod_status</code> written in Perl.
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